内部EGR与汽油燃料HCCI燃烧关系的探讨  

Study on the Relationship between External EGR and Gasoline-fueled HCCI Combustion

作　　者：祁俊荣[1] 钟绍华[1] 

机构地区：[1]武汉理工大学汽车工程学院,湖北武汉430070

出　　处：《内燃机》2006年第5期28-30,共3页Internal Combustion Engines

摘　　要：HCCI燃烧是一种新的发动机燃烧技术,介绍了HCCI燃烧的实现方式,指出EGR是最有可能获得四冲程汽油HCCI燃烧的方法,并且其可以通过早关排气阀得到;简要分析了内部EGR对HCCI燃烧的影响;阐述了为捕捉残余废气而改变气门正时过程中存在的泵气损失和回流损失问题。Homogeneous Charge Compression Ignition（HCCI） is a new technique in the field of combustion . In this paper the methods which can be used to facilitate the HCCI combustion are introduced .The use of recycling of burnt gases （EGR） is considered probably the most appropriate method to achieve HCCI combustion in a 4 - stroke gasoline engine and it can be obtained by closing the exhaust valve relatively early . The effect of external EGR on HCCI combustion is analyzed simply. The problems （ such as pumping loses and backflow loses） which are caused by changing valve timing in order to trapping residuals are illustrated.

关 键 词：均质充量压缩燃烧 EGR 泵气损失 回流 

分 类 号：TK411.1[动力工程及工程热物理—动力机械及工程]